<template>
<div class="login-wrap">
    <div class="login-box">
        <!-- 头像区域 -->
        <div class="avatar_box">
            <img src="../../assets/logo.png" alt="" />
        </div>
        <!-- 表单区域 -->
        <el-form ref="loginFormRef" label-width="0" class="login_form" :model="loginForm" :rules="loginFormRules">
            <!-- 用户名 -->
            <el-form-item prop="username">
                <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
            </el-form-item>
            <!-- 密码 -->
            <el-form-item prop="password">
                <el-input type="password" prefix-icon="iconfont icon-3702mima" v-model="loginForm.password"></el-input>
            </el-form-item>
            <!-- 按钮区域 -->
            <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>
        </el-form>
    </div>
</div>
</template>

<script>
export default {
    data() {
        return {
            loginForm: {
                username: 'admin',
                password: '123456',
            },
            loginFormRules: {
                // 验证用户名是否合法
                username: [{
                        required: true,
                        message: '请输入登录名称',
                        trigger: 'blur',
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '长度在 3 到 10 个字符',
                        trigger: 'blur',
                    },
                ],
                // 验证密码是否合法
                password: [{
                        required: true,
                        message: '请输入密码',
                        trigger: 'blur',
                    },
                    {
                        min: 6,
                        max: 15,
                        message: '长度在 6 到 15 个字符',
                        trigger: 'blur',
                    },
                ],
            },
        }
    },
    methods: {
        // 登录请求
        login() {
            this.$refs.loginFormRef.validate(async (valid) => {
                if (!valid) return
                // async和await让异步执行代码看起来像同步执行代码
                const res = await this.$http.post('login', this.loginForm)
                const {
                    data,
                    meta: {
                        msg,
                        status
                    },
                } = res.data
                if (status === 200) {
                    window.sessionStorage.setItem('token', data.token)
                    this.$message.success(msg)
                    this.$router.push({
                        name: 'home',
                    })
                } else {
                    this.$message.error(msg)
                }
            })
        },
        //重置表单
        resetLoginForm() {
            this.$refs.loginFormRef.resetFields()
        },
    },
}
</script>

<style lang="less" scoped>
.login-wrap {
    height: 100%;
    background-color: #2b4b6b;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;

    img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
}

.btns {
    display: flex;
    justify-content: flex-end;
}

.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style>
